- John Wayne
- Capt. Ralls
- Gail Russell
- Angelique Desaix
- Gig Young
- Samuel 'Sam' Rosen
- Adele Mara
- Teleia Van Schreeven
- Luther Adler
- Mayrant Ruysdaal Sidneye
- Eduard Franz
- Harmenszoon Van Schreeven
- Grant Withers
- Capt. Wilde Youngeur
- Henry Daniell
- Jacques Desaix
- Paul Fix
- Antonio 'Ripper' Arrezo
- Dennis Hoey
- Capt. Munsey
- Jeff Corey
- Mr. Loring
- Erskine Sanford
- Dr. van Arken
- Duke Kahanamoku
- Ua Nuke
- Fred Aldrich
- Seaman
- Fernando Alvarado
- Maru
- Jose Alvarado
- Taluna
- George Barrows
- Seaman
- Henry Brandon
- Kurinua
- David Clarke
- Mullins
- Jimmy Dime
- Seaman
- Fred Fox
- Ship's Surgeon
- Fred Graham
- Sailor in Fight
- Myron Healey
- 'Red Witch' Seaman
- Mailoa Kalili
- Seaman
- Al Kikume
- Desaix's Native Servant
- Fred Libby
- Lookout Sailor
- Harold Lishman
- Kharma
- Rory Mallinson
- Officer
- Grant Means
- Dirk
- Frank Mills
- Seaman
- Forbes Murray
- Shipwreck Inquiry Board Member
- James Nolan
- First Diver
- Frank O'Connor
- Old Seaman
- John Pickard
- Second Diver
- George Piltz
- Native
- Norman Rainey
- Lawyer
- Max Reid
- Seaman
- Leo C. Richmond
- Native Priest
- Chuck Roberson
- Seaman
- Wallace Scott
- Sailor
- Mickey Simpson
- Second Officer
- Ray Spiker
- Seaman / Flogger (uncredited)
- Carl Thompson
- Hekkim--Cabin Boy
- Kuka Tuima
- Native
- Harry J. Vejar
- Jarma--Angelique's Servant
- Harlan Warde
- Seaman Handling Diving Line
- John Wengraf
- Prosecuting Attorney
- Harry Wilson
- 'Red Witch' Seaman
- Ward Wood
- Young Sailor
